Strain-Induced Gauge Field and Landau Levels in Acoustic Structures
The emerging field of topological acoustics that explores novel gauge-field-related phenomena for sound has drawn attention in recent years. However, previous approaches constructing a synthetic gauge field for sound predominantly relied on a periodic system, being unable to form a uniform effective...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/81412 http://hdl.handle.net/10220/43466 |
| _version_ | 1824455189331968000 |
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| author | Yang, Zhaoju Gao, Fei Yang, Yahui Zhang, Baile |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Yang, Zhaoju Gao, Fei Yang, Yahui Zhang, Baile |
| author_sort | Yang, Zhaoju |
| collection | NTU |
| description | The emerging field of topological acoustics that explores novel gauge-field-related phenomena for sound has drawn attention in recent years. However, previous approaches constructing a synthetic gauge field for sound predominantly relied on a periodic system, being unable to form a uniform effective magnetic field, thus lacking access to some typical magnetic-induced quantum phenomena such as Landau energy quantization. Here we introduce strain engineering, previously developed in graphene electronics and later transferred to photonics, into a two-dimensional acoustic structure in order to form a uniform effective magnetic field for airborne acoustic wave propagation. Landau levels in the energy spectrum can be formed near the Dirac cone region. We also propose an experimentally feasible scheme to verify the existence of acoustic Landau levels with an acoustic measurement. As a new freedom of constructing a synthetic gauge field for sound, our study offers a path to previously inaccessible magneticlike effects in traditional periodic acoustic structures. |
| first_indexed | 2025-02-19T03:34:15Z |
| format | Journal Article |
| id | ntu-10356/81412 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:34:15Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/814122023-02-28T19:31:56Z Strain-Induced Gauge Field and Landau Levels in Acoustic Structures Yang, Zhaoju Gao, Fei Yang, Yahui Zhang, Baile School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Landau levels Acoustic structures The emerging field of topological acoustics that explores novel gauge-field-related phenomena for sound has drawn attention in recent years. However, previous approaches constructing a synthetic gauge field for sound predominantly relied on a periodic system, being unable to form a uniform effective magnetic field, thus lacking access to some typical magnetic-induced quantum phenomena such as Landau energy quantization. Here we introduce strain engineering, previously developed in graphene electronics and later transferred to photonics, into a two-dimensional acoustic structure in order to form a uniform effective magnetic field for airborne acoustic wave propagation. Landau levels in the energy spectrum can be formed near the Dirac cone region. We also propose an experimentally feasible scheme to verify the existence of acoustic Landau levels with an acoustic measurement. As a new freedom of constructing a synthetic gauge field for sound, our study offers a path to previously inaccessible magneticlike effects in traditional periodic acoustic structures. MOE (Min. of Education, S’pore) Published version 2017-07-27T06:57:35Z 2019-12-06T14:30:25Z 2017-07-27T06:57:35Z 2019-12-06T14:30:25Z 2017 Journal Article Yang, Z., Gao, F., Yang, Y., & Zhang, B. (2017). Strain-Induced Gauge Field and Landau Levels in Acoustic Structures. Physical Review Letters, 118(19), 194301-. 0031-9007 https://hdl.handle.net/10356/81412 http://hdl.handle.net/10220/43466 10.1103/PhysRevLett.118.194301 en Physical Review Letters © 2017 American Physical Society (APS). This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society (APS). The published version is available at: [http://dx.doi.org/10.1103/PhysRevLett.118.194301]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 5 p. application/pdf |
| spellingShingle | Landau levels Acoustic structures Yang, Zhaoju Gao, Fei Yang, Yahui Zhang, Baile Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title | Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title_full | Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title_fullStr | Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title_full_unstemmed | Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title_short | Strain-Induced Gauge Field and Landau Levels in Acoustic Structures |
| title_sort | strain induced gauge field and landau levels in acoustic structures |
| topic | Landau levels Acoustic structures |
| url | https://hdl.handle.net/10356/81412 http://hdl.handle.net/10220/43466 |
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